Pushrod length

Take a stock push rod and cut it in half [or a convienent place] and thread it to 1/4 X 20 or 10/32 or what ever. place some all thread in the middle of it and "adjust" the push rod to the desired length! Then using a dial caliper measure the over all length and bingo! Do not forget to spec. which ends, wall thickness and diameter you may want. Keep this in your tool box for future builds!